How can I show a PyQt modal dialog and get data out of its controls once its closed?

Question

For a built-in dialog like QInputDialog, I\'ve read that I can do this:

text, ok = QtGui.QInputDialog.getText(self, \'Input Dialog\', \'Enter your name:\')
<         


        

Answer 1

Here is simple class you can use to prompt for date:

class DateDialog(QDialog):
    def __init__(self, parent = None):
        super(DateDialog, self).__init__(parent)

        layout = QVBoxLayout(self)

        # nice widget for editing the date
        self.datetime = QDateTimeEdit(self)
        self.datetime.setCalendarPopup(True)
        self.datetime.setDateTime(QDateTime.currentDateTime())
        layout.addWidget(self.datetime)

        # OK and Cancel buttons
        buttons = QDialogButtonBox(
            QDialogButtonBox.Ok | QDialogButtonBox.Cancel,
            Qt.Horizontal, self)
        buttons.accepted.connect(self.accept)
        buttons.rejected.connect(self.reject)
        layout.addWidget(buttons)

    # get current date and time from the dialog
    def dateTime(self):
        return self.datetime.dateTime()

    # static method to create the dialog and return (date, time, accepted)
    @staticmethod
    def getDateTime(parent = None):
        dialog = DateDialog(parent)
        result = dialog.exec_()
        date = dialog.dateTime()
        return (date.date(), date.time(), result == QDialog.Accepted)

and to use it:

date, time, ok = DateDialog.getDateTime()

Answer 2

I tried to edit the answer of hluk with the changes below but it got rejected, not sure why because it got some clear bugs as far is I can see.

bugfix 1: removed self. from self.layout.addWidget(self.buttons)

bugfix 2: connected OK and Cancel buttons to its correct actions

enhancement: made the code ready to run by including the imports and improved the run example

from PyQt4.QtGui import QDialog, QVBoxLayout, QDialogButtonBox, QDateTimeEdit, QApplication
from PyQt4.QtCore import Qt, QDateTime

class DateDialog(QDialog):
    def __init__(self, parent = None):
        super(DateDialog, self).__init__(parent)

        layout = QVBoxLayout(self)

        # nice widget for editing the date
        self.datetime = QDateTimeEdit(self)
        self.datetime.setCalendarPopup(True)
        self.datetime.setDateTime(QDateTime.currentDateTime())
        layout.addWidget(self.datetime)

        # OK and Cancel buttons
        self.buttons = QDialogButtonBox(
            QDialogButtonBox.Ok | QDialogButtonBox.Cancel,
            Qt.Horizontal, self)
        layout.addWidget(self.buttons)

        self.buttons.accepted.connect(self.accept)
        self.buttons.rejected.connect(self.reject)

    # get current date and time from the dialog
    def dateTime(self):
        return self.datetime.dateTime()

    # static method to create the dialog and return (date, time, accepted)
    @staticmethod
    def getDateTime(parent = None):
        dialog = DateDialog(parent)
        result = dialog.exec_()
        date = dialog.dateTime()
        return (date.date(), date.time(), result == QDialog.Accepted)

and to use it:

app = QApplication([])
date, time, ok = DateDialog.getDateTime()
print("{} {} {}".format(date, time, ok))
app.exec_()